Waterproof box spring sheet for bed. I am selling this because I purchased the wrong size. It is new and unused, but has been opened and stored at home, so please understand this before purchasing. Size: 220 x 200 x 30cm Fits mattresses with a thickness of 20-30cm Color: Gray Surface fabric: Fiber fabric, Back fabric: TPU waterproof membrane, Side fabric: Polyester The following is a quote from the product description: ~~~~~~~~~~~~~~~~~~~~ Great for various situations, such as for women's menstruation, children's spit-up or bedwetting, pet accidents, elderly care, and for those prone to allergies! The all-around elastic design prevents slipping even when you toss and turn, securely fixing the mattress, and is super easy to put on and take off! It can be used all year round and makes no crinkling sounds. You can sleep well every night! Please note that the side gussets are not completely waterproof to prevent water from pooling and to allow the sheets to dry easily.